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Double walled microcapsules with an outer thermoplastic wall and application process thereof

a thermoplastic wall and microcapsule technology, applied in the field of double walled microcapsules with an outer thermoplastic wall and application process thereof, can solve the problems of air and vapour permeability, and therefore difficult body transpiration, and achieve the effect of not affecting flexibility, drape, and less flexibl

Inactive Publication Date: 2012-12-11
DEVAN MICROPOLIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach enhances the thermal insulation properties of textiles by maintaining air permeability and flexibility, preventing PCM evaporation, and reducing formaldehyde exposure, making them suitable for applications like winter clothing and sports gear.

Problems solved by technology

This application of binder means that a film is formed between the fibres, which makes permeability to air and vapour, and therefore body transpiration difficult.

Method used

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  • Double walled microcapsules with an outer thermoplastic wall and application process thereof
  • Double walled microcapsules with an outer thermoplastic wall and application process thereof

Examples

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example

[0040]1 Kg of microcapsules of phase change materials with a melamine-formaldehyde wall was dispersed in 10 liters of water and 5 Kg of styrene were added together with 100 g of benzoyl peroxide. The mixture was heated up to a temperature between 50° C. and 100° C. and left to react for a period between 20 minutes to 2 hours. It was then filtered and left to dry at a temperature of 60° C.

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Abstract

The present invention concerns double-walled microcapsules with an outer thermoplastic wall and an application process thereof on substrates, namely textile substrate. The microcapsules are applied to fibers so as to produce a slow release of products such as fragrances, antimicrobial, insecticides, antioxidants, vitamins or they can be used as materials such as thermochromic pigments, that change color when heated, or “phase change materials” (PCM), that convey thermal insulation / control.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application is the National Stage of PCT Application No. PCT / PT2003 / 00011, filed Aug. 26, 2003, the contents of all of which are incorporated herein by reference in their entirety.[0002]The present invention concerns double-walled microcapsules with an outer thermoplastic wall and an application process thereof on substrates, namely textile substrate.[0003]The microcapsules are applied to fibres so as to produce a slow release of products such as fragrances, antimicrobial, insecticides, antioxidants, vitamins or they can be used as materials such as thermochromic pigments, that change colour when heated, or “phase change materials” (PCM), that convey thermal insulation / control.BACKGROUND TO THE INVENTION[0004]The way microcapsules are bound to fibres is usually with binders that cover the whole area of the fibres and the microcapsules.[0005]Usually microcapsules of controlled release are applied with binders on the surface of fabrics ...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61K9/16B01J13/22D06M23/12
CPCB01J13/22D06M23/12Y10T442/2525D06M15/233D06M15/423
Inventor GOMES, JAIME ISIDORO NAYLOR DA ROCHAESTEVES LIMA, CARLOS JOAQUIM
Owner DEVAN MICROPOLIS